The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2013
Filed:
Jan. 27, 2010
Absalon Bonilla, Carrollton, TX (US);
Carlos O. Chamorro, Plano, TX (US);
Richard A. Mauk, Lewisville, TX (US);
John P. Stachler, Plano, TX (US);
Absalon Bonilla, Carrollton, TX (US);
Carlos O. Chamorro, Plano, TX (US);
Richard A. Mauk, Lewisville, TX (US);
John P. Stachler, Plano, TX (US);
Lennox Industries Inc., Richardson, TX (US);
Abstract
An HVAC unit includes a transformer and a system controller. The transformer is configured to receive power from a first and a second phase of a three-phase power source and to produce a first reduced-voltage waveform therefrom. The system controller is adapted to sample the reduced voltage waveform to determine a figure of merit of the three-phase power source. The controller is further configured to operate the HVAC unit in response to the figure of merit.